Blame SOURCES/super1-Always-round-data-offset-to-1M.patch
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From 795bd44ed11aafbed2628ba21216c667371e79a5 Mon Sep 17 00:00:00 2001
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From: Pawel Baldysiak <pawel.baldysiak@intel.com>
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Date: Wed, 26 Jul 2017 16:41:54 +0200
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Subject: [RHEL7.5 PATCH 159/169] super1: Always round data offset to 1M
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Currently if metadata requires more then 1M,
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data offset will be rounded down to closest MB.
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This is not correct, since less then required space is reserved.
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Always round data offset up to multiple of 1M.
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Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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super1.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/super1.c b/super1.c
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index 86ec850..b15a1c7 100644
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--- a/super1.c
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+++ b/super1.c
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@@ -2796,8 +2796,7 @@ static int validate_geometry1(struct supertype *st, int level,
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headroom >>= 1;
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data_offset = 12*2 + bmspace + headroom;
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#define ONE_MEG (2*1024)
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- if (data_offset > ONE_MEG)
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- data_offset = (data_offset / ONE_MEG) * ONE_MEG;
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+ data_offset = ROUND_UP(data_offset, ONE_MEG);
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break;
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}
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if (st->data_offset == INVALID_SECTORS)
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--
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2.7.4
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